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Finding the Fourth Proportional to 675.69, 932.88 and 488.89

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Solution

The fourth proportional to 675.69, 932.88 and 488.89 is: 674.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    675.69 : 932.88 = 488.89 : x
  2. Step 2: Convert to fraction form
    675.69/932.88 = 488.89/x
  3. Step 3: Cross multiply
    675.69x = 932.88 × 488.89
  4. Step 4: Simplify right side
    675.69x = 456,075.70
  5. Step 5: Solve for x
    x = 456,075.70/675.69
  6. Step 6: Final answer
    x = 674.98

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.